baber/WOPTO huggingface dataset:
Patent GB-1472213-A (GB)
Title: Multiple zone communications system and method
IPC: H04W48/20
Filed: 1974-05-13
Abstract: 1472213 Radio communication MARTIN MARIETTA CORP 13 May 1974 [15 May 1973] 8063/75 Divided out of 1472212 Heading H4L In a mobile telephone system, the radio speech channels being used for connections between mobile units and a first base station are continually monitored at the base station and when the level of a channel drops below a predetermined level, a zone change request signal is generated. Base stations of zones adjoining that of the first station are then caused to monitor the particular speech channel and an existing connection is re-established via one of said adjoining base stations in dependence on the monitored signal levels. Fig. 1 shows a complete mobile system wherein a plurality of overlapping service areas (Fig. 7) are provided each having a base station connected by digital signalling paths and speech paths 55 to a SPC central control terminal. Duplex speech and control signal channels are allocated on a non- interfering basis to the base stations permanently, dynamically or a mixture of both types of allocation (see Figs. 3, 4, 5, 6 not shown). For a description of the speech channel selection procedures and other features associated with the telephonic aspects of the system reference is directed to the abridgement of the parent Specification. Change of tone during a telephone connection.- A base station (Fig. 11) continuously monitors the receive channels RCVI-RCVN of radio telephone connections being carried out via it, and a threshold detector 224 causes a signal to be sent to the central control terminal (Fig. 10, not shown), when a receive channel falls below a predetermined threshold level. The central processor of the control terminal then instructs the base stations of adjoining zones to monitor the particular speech channel, using either an idle speech channel receiver or a separate monitoring receiver 226, and to send to the processor an indication of the signal strength of a test signal which the mobile unit is caused to emit on receipt of a signal over the existing speech channel from the central processor. The base station giving the highest signal strength which has idle speech channels is then chosen and a new speech channel is allocated at that station to handle the continuation of the call. If no speech channel in a neighbouring zone is available for allocation a signal is sent to the mobile unit to cause a flasher to operate.
Patent GB-278964-A (GB)
Title: A new or improved protective device applicable for covering the tonneau of a motor car and for other purposes
IPC: B60N2/60
Filed: 1927-03-24
Abstract: 278,964. Griffith, M. G. S. March 24, 1927. Covers, wagon and like.-A protective or covering device for an enclosed space or receptacle such as the seating-space of a motor-vehicle or boat, or a delivery box or basket, or for attachment to the frame of a shop window or showcase to serve as a blind or cover, comprises a flexible cover a formed in two or more parts, which are connected along their meeting edges by a strip fastening d operated by a sliding member e adapted to be locked in position when the fastening is closed, the cover being detachably secured to the walls of the space or receptacle or to the surrounding frame by means, such as headed studs f on the walls or frame engaging keyhole or T-headed slots c in the cover, which cannot be disengaged when the fastening is closed. In the arrangement shown the cover is applied, as a protection against rain or against theft of articles placed under the cover, to the rear seating-space of a motor-car, the sliding member e being adapted to be secured by a lock g to the rear of the front seats.
Patent GB-576474-A (GB)
Title: Devices for influencing the control grids of high voltage vapour discharge vessels by means of impulses
IPC: H02M1/04
Filed: 1943-05-22
Abstract: 576,474. Converting. AKT.-GES. BROWN, BOVERI, & CIE. May 22, 1943, No. 8172. Convention date, May 29, 1942. [Class 38 (ii)] The grids 4 of high-voltage grid-controlled discharge devices are supplied with control impulses which are initially produced in ap.paratus at earth potential and are transmitted in the form of modulated high-frequency current which is subsequently demodulated before application to the grids. For the two grid circuits shown, thermionic oscillation generators 16 are modulated in phase opposition by control impulses applied at terminals 17 and the modulated output from windings 14 is applied through insulating transformers 8, the secondary circuits of which are tuned to the carrier frequency, rectifiers 9 and screened transformers 12 to the circuits of the grids 4. The arrangement is particularly applicable to the high-voltage units of groups of seriesconnected rectifiers and inverters at opposite ends of a high-voltage D.C. transmission line. Specifications 521,717 and 530,416 are referred to.
Patent GB-776779-A (GB)
Title: Improvements in or relating to remote indicating systems
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: G08C15/12
Filed: 1953-03-25
Abstract: 776,779. Remote indicating systems. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 25 1954 [March 25, 1953], No. 8178/53. Class 40 (1). In a remote indicating system wherein information from a number of sources, e.g. meters and lamps, is transmitted to a receiving station by a multiplex transmitting system, there being provided at the receiving station means for reproducing the transmitted signals, check signals also representing the information are transmitted, so that information reproduced at the receiving station from the first-mentioned signals is cyclically checked. As shown, the signals to be transmitted are applied at 1 as analogue potentials to a high-speed selector switch 2, the check signals being applied to a low-speed selector switch 3 whose output is applied to the input of selector switch 2. The selector switch 2 may comprise rings of thermionic valves. A master frequency generator 4 through a selector timing device 5 controls switches 2 and 3, and also controls a pulse width modulator 6, providing pulses having widths proportional to the analogue potentials. The modulator 6 includes in its output circuit a differentiating circuit whereby for each signal a positive and negative pulse is produced having a spacing proportional to the analogue voltage, which are applied to a line 7. Synchronizing signals having a pulse width greater than the maximum analogue signal are applied at 30, and are separated from the signal pulses by a discriminator 10. The signal pulses are fed to a demodulator 16 and through a distributer 17 provide potentials at 17a corresponding to the analogue inputs. Synchronizing pulses are fed from the discriminator 10 to a ring counter 18 to control the distributor 17. To check for modulation and demodulation check potentials are applied to channels 20 and 21 at the transmitter, e.g. zero and a standard potential, and at the receiver the corresponding outputs are stored at 22 and 23 and compared with similar check potentials, an alarm being operated if the deviation exceeds a preset tolerance. To check the information provided at the distributer 17 the inputs 1 are also supplied to the low-speed selector switch 3 which samples in turns one input for every complete cycle of the selector switch 2, the check signals being supplied over channel 1a to be stored in the receiver at 24 and applied to a comparator 25. The output signals 17a are also applied to the comparator 25 via a low-speed selector switch 26 operating in synchronism with the switch 3 and controlled by synchronizing pulses supplied over a channel 27 via sync. separator 28. If the difference of the two signals at the comparator exceeds a preset tolerance an alarm C is operated. To avoid the possibility of raising a false alarm a channel 29 is used to inhibit the alarm system when an analogue potential is changing appreciably during one cycle of selector switch 2. Standby equipment may be brought into operation automatically by switches 30a, 31, at the transmitter and 32, 33, at the receiver.
Patent GB-417763-A (GB)
Title: Improvements in or relating to priming compositions free from fulminate of mercury
IPC: C06B41/08
Filed: 1934-03-15
Abstract: 417,763. Explosives; blasting-detonators. BALL, C. J. P., Old House, Fulmer, Buckinghamshire.-(Assignee of Eschbach, W.; Altenratherstrasse, and Friedrich, W. ; Miilheimerstrasse, both in Troisdorf, near Cologne, Germany.) March 15, 1934, No. 8222. Convention date, May 12, 1933. [Classes 9 (i) and 9 (ii).] Priming compositions free from fulminate of mercury are prepared by mixing a neutral, basic, or poly-basic lead salt of a nitro-body, for example lead trinitro-resorcinate or dibasic picrate, with 10 to 20 per cent of one or more of the following heavy metal azides, namely mercury, silver, and copper azides, the mixing being performed for example in aqueous emulsion. A gum arabic or resin solution may be added to bind the mixture, or the mixture may be sprayed with a resin or nitrocellulose solution as in Specification 156,429, [Class 9 (ii)]. Such a mixture may be used as a top charge on a detonator containing a main charge of nitropentaerythrite or other usual ingredient. The casing may be made of aluminium, copper, brass, or zinc. Specifications 142,823, 180,605, 192,830, and 209,157, [all in Class 9 (ii)], are referred to for priming compositions containing lead salts of nitrobodies and lead azide or fulminate of mercury.
Patent GB-685817-A (GB)
Title: Water heating apparatus
IPC: F24H1/20
Filed: 1951-04-09
Abstract: 685,817. Hot-water boilers. MATTHEWS, D. April 9, 1951 [May 19,1950], No. 8240/51. Class 64 (i) A water boiler comprises a closed tank 4 containing a firebox 5 the upper horizontal wall 13 of which is spaced from that 10 of the tank, a chimney 12 extening from the horizontal wall 13 to the atmosphere and wholly or partly supporting the firebox 5, a constantly open charging aperture 14 in the firebox for gravitational fuel feeding from above, and a water inlet 9 and outlet 18 at low and high levels respectively in the tank. A removable conical hopper 15 is inserted in the aperture 14, the wall of which also helps to support the firebox 5. The lower end of the chimney may, as shown, be surrounded by a water jacket 20.
Patent GB-742465-A (GB)
Title: Improvements in and relating to toy vehicles and guiding means therefor
IPC: A63H18/02
Filed: 1951-04-10
Abstract: 742,465. Toy vehicles and tracks. MULLER, H. April 10, 1951 [Nov. 2, 1950; Feb. 10, 1951], No. 8313/50. Class 132(3) Toy vehicles having one or more guide rollers are adapted to run along a single guide track which consists of flexible and non-flexible parts connected together. In Fig. 1 a clockwork propelled vehicle comprises rear running wheels 3 and a guide roller 7 which is mounted on a pivoted bearing bracket 12, the roller 7 engaging a helical spring guide track 11. Alternatively, the flexible track may consist of cord, string or tubing, stiffened at the ends for joining by sockets 45, 75, Figs. 12 and 14. The non-flexible track parts may consist of accessories including rigid guide track portions. Fig. 18 shows an accessory which facilitates engagement of a vehicle's guide roller 7 with the guide track at 15, leading rails 14 and guide walls 23 aligning the vehicle as it is placed on the device by the operator. A modification, Figs. 43-46 (not shown), is in the form of a garage having double doors at each end. Fig. 24 shows a track device in which a pivoted member 26 having stops 29, 30 prevents a vehicle A from moving until a vehicle B travelling in the opposite direction engages the stop 30. Junctions, crossovers and turntables comprise rigid guide track portions mounted on bases, Figs. 28-30, 34, 40-42, 51 (not shown). A junction having both flexible and non-flexible track portions, Fig. 32, has a turntable 39 for directing vehicles from the track 36" via a flexible track member 56 on to any one of three rigid track portions 57-59. The bases of the track accessories normally have plug members for engagement with the sockets 45, 75, the plugs being reinforced by a metal, e.g. wire, core. Fig. 55 shows a crossing for which no plug and socket is needed, recesses 97 formed on the underside of the crossing lying over the track 11. A device for winding up the vehicle's clockwork mechanisms may be in the form of a filling station and be operated by hand or by an electric motor. Specification 609,293 is referred to.
Patent GB-577587-A (GB)
Title: Improvements in and relating to hydraulic systems for gear controls
IPC: F16H61/02
Filed: 1944-05-03
Abstract: 577,587. Controlling variable-speed gearing. SELF-CHANGING GEAR CO., Ltd., WILSON, A. G., and MILLER, A. A. May 3, 1944, No. 8370. [Class 80 (ii)] [Also in Group XXIX] In a hydraulic system for controlling a variaable-speed gear which is driven from a non- positive coupling, such as a fluid or electromagnetic coupling, and in which a pump for supplying the pressure fluid is driven from the output member of the coupling or the input member of the gear, a hydraulic accumulator is provided to store sufficient pressure fluid to complete the operation of a gear change despite the slowing up or stalling of the output member of the coupling and the pump consequent upon the application of load. In the Fig. a pump 1 driven from the input shaft 3 of the gear supplies fluid under pressure through conduits 1c, 1b to a control valve 4 which controls the supply to cylinders 5, 5a or 5b operating the brake bands or clutches 6, 6a or 6b of an epicyclic gear. Pressure fluid is also supplied through a non-return valve 1d to the cylinder 7 of an hydraulic accumulator 7a comprising a piston 7b loaded by a spring 13. The accumulator discharges to the supply conduit 1b when required through a restrictor device 9 and is conveniently situated in the sump 15 of the system. A gauze screen 15a surrounding the spring 13 serves to filter the hydraulic fluid to the inlet conduit 15b of pump 1 and also to the inlet conduit 15c of a second pump 11 which is driven by the output shaft 8 of the gear. This second pump is provided to enable pressure fluid to be supplied to operate the gear in the event of the engine having to be started by towing the vehicle. The accumulator preferably comprises a double spring the inner of which is picked up by the piston towards the end of its stroke to provide increased resistance at this stage.
Patent GB-367211-A (GB)
Title: Improvements in or relating to devices for measuring the internal dimensions of tubes
Filed: 1931-03-19
Abstract: 367,211. Linear-dimension gauges. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, and CARR, F. R., of Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. March 19, 1931, No. 8450. [Class 106 (ii).] A device for measuring the sizes of pipes especially of hose pipes comprises a substantially triangular plate having a graduated notched edge and datum edges 1, 2. In the example shown, the datum edges are at right-angles to one another and the sides of the notches are parallel to the datum edges. The sizes represented by the distances between the sides 3 of the notches and the one parallel datum edge 1 are intermediate between the sizes represented by the distances between the other sides 4 of the notches and their parallel datum edge 2. In the example the sizes proceed in eighths of an inch and the steps on each side differ by twice the " pitch " or by one quarter of an inch.
Patent GB-378823-A (GB)
Title: Improvements in the manufacture of bottles or other glass articles
IPC: C03B9/44
Filed: 1932-03-22
Abstract: 378,823. Glass manufacture. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Europõischer Verband der Flaschenfabriken Ges. ; 20, Breitestrasse, Dusseldorf, Germany.) March 22, 1932, No. 8476. [Class 56.] Blowing.-A method of holding formed articles in a glass blowing machine after the finishing moulds have been opened consists in providing means for holding the articles on the bottom plates of the moulds by suction. The invention is particularly intended for use with the Owens type of machine, and others, in which the formed articles are dropped by gravity after the finishing moulds open, and the suction prevents the articles from being pulled to one side by the opening movement of the mould sections. The mould sections 11, Fig. 2, are supported on a plate 21 which is hinged to a rotatable mould carriage and is raised and lowered, as the carriage rotates, by a fixed cam. The mould sections, when closed, surround and engage a bottom plate 22 formed with recesses 25 which register with the mould cavities 23. The plate 22 is formed with a downward extension 26, Fig. 4, which fits into an aperture in the supporting plate 21 and seats on a valve box 33 formed with a vacuum chamber 32. Valves 34 carried on stems 36 control communication between the chamber 32 and valve chambers 37, and narrow slits or other restricted openings are provided between the chambers 37 and the recesses 25 in the mould bottom plate. Each valve stem 36 carries on its upper end a perforated valve disc 40 which, when the valve is lowered, opens the valve chamber 37 to the atmosphere through a lateral port 31, and closes the port when the valve is lifted. The valves are controlled by stationary cam plates 42 which engage rollers on the bottoms of the stems 36, and by springs which normally keeps the valves 37 closed. When the stems 36 are lifted by the cams 42, air is drawn from beneath the mould bottoms through the chamber 32, and the articles, such as bottles 24, are held against the mould bottoms by the suction. As soon as the valves 34 close, communication between the chambers 37 and the chamber 32 is closed and the disc 40 opens the relief port 41, so that air pressure is admitted beneath the bottle and allows it to drop into a receiver 50. When using moulds with multiple cavities, as shown, the cams 42 are individually adjustable in the direction of their lengths by means of a screw in order to control the point at which each bottle is released.
Patent GB-701222-A (GB)
Title: Improvements in or relating to tertiary-aminoalkyl-4-amino-2-alkoxybenzoates and their salts and the preparation thereof
Filed: 1951-04-12
Abstract: The invention comprises basic esters of the general formula <FORM:0701222/IV (b)/1> (wherein R and R1 represent alkyl radicals of 1-6 carbon atoms, which may be joined together directly or through an oxygen atom to form a saturated N-heteromonocyclic radical having 5 or 6 ring atoms, X represents an alkylene radical of 2-4 carbon atoms and R11 an alkyl radical of 2-6 carbon atoms), and their salts, and the preparation thereof by esterifying a 4-nitro-2-alkoxybenzoic acid to produce the corresponding basic nitro esters, reducing the nitro group, and, if desired, reacting the product with an acid.  The esterification of the 4-nitro-2-alkoxybenzoic acid may be effected by reacting it with a tertiary-aminoalkyl halide RR1N-X-halogen, or by reacting a halide thereof with a tertiary-aminoalkanol RR1N-X-OH, or by reacting the acid with the alkanol in the presence of an esterification catalyst, or by ester intercharge, with the tertiary-aminoalcohol, of an ester of the formula <FORM:0701222/IV (b)/2> (obtainable by esterification and etherification of 4-nitro-2-hydroxybenzoic acid).  The reduction of the nitro group may be effected by chemical methods (e.g. with iron or tin and hydrochloric acid, ferrous sulphate and ammonia, or sodium hydrosulphite) or by the action of hydrogen in the presence of a hydrogenation catalyst (e.g. Raney nickel, platinum or palladium). The products are useful as local anaesthetics, either in the form of free bases or salts (e.g. hydrochlorides, hydrobromides, phosphates, sulphates, citrates, sulphonates, tartrates, succinates, acetates, benzoates or oleates). Examples describe the preparation of compounds of the first general formula above in which NRR1 is dimethylamino, diethylamino or piperidino, X is ethylene or 1:3-propylene, and R11 is ethyl, n-propyl, n- or isobutyl or n-hexyl. Intermediates described include ethyl 2-ethoxy-, n-propyl 2-n-propoxy-, n-butyl 2-n-butoxy-, isobutyl 2-isobutoxy- and n-hexyl 2-n-hexoxy-4-nitrobenzoates (obtained by treating 4-nitro-2-hydroxybenzoic acid with the appropriate alkyl benzene- or toluenesulphonates), methyl 2-n-propoxy-4-nitrobenzoate (obtained by treating methyl 4-nitro-2-hydroxybenzoate with n-propyl benzenesulphonate), and the corresponding 4-nitro-2-alkoxybenzoic acids and tertiary-aminoalkyl esters thereof.  Specification 317,296, [Class 2 (3)], is referred to.
Patent GB-836905-A (GB)
Title: Improvements in or relating to a process of preparing alkyl esters of pyridine carboxylic acids
Filed: 1957-03-14
Abstract: An alkyl ester of a pyridine carboxylic acid is obtained in a process which comprises reacting an alkanol with a pyridine carboxylic acid at a temperature of about 140 DEG  C. and at elevated pressure to permit maintaining said temperature, separating the alkanol together with water from the reaction mixture by distillation, separating the alkanol from the water present in said distillate, returning the separated alkanol to the reaction mixture, and finally separating excess alkanol and thereafter the alkyl ester of the pyridine carboxylic by distillation from the reaction mixture.  Operational temperatures between 140 DEG  and 225 DEG  C. may be employed. Suitable acids are nicotinic acid, isonicotinic acid, isocinchomeronic acid and alkyl substituted acids such as picolinic and lutidinic acids.  Examples describe the esterification of n-butyl alcohol and methanol.
Patent GB-549028-A (GB)
Title: Earth inductor compass
IPC: G01C17/30
Filed: 1941-07-05
Abstract: 549,028. Earth inductor compasses. DUNCAN, W. O. (Intercontinental Service Corporation). July 5, 1941, No. 8522. [Class 37] An earth inductor compass comprises a con tinuously-driven motor' 1 m a screening housing 6, driving a shaft 3 carrying cruciform rods 4 on which are wound coils 5a ... d connected together in pairs and their ends connected to brushes 26a ... d fixed on the shaft 3. The brushes engage arcuate segments 14a ... d of a commutator, the segments 14a, 14c being connected at 18, 19 to rings 16, 17, respectively, to which a centre-zero indicating instrument is connected at 21, 22. The rings and segments are carried on insulating annuli 12, 13 on a wormwheel 11 which can be rotated by a worm 31 and flexible shaft 32 from a handle 33 with an associated indicator 34. In operation the handle 33 is adjusted to the desired course and so as to set the commutator with the line joining the mid points of segments 14a, 14c at right angles to the earth's field. In these conditions the reading of the instrument remains at zero, but any departure from the set course gives an indication, Figs. 4-9 (not shown). Means 30 is provided for constantly compensating for the earth field's vertical component, or the inductor mounted in gimbals and associated with a gyroscope.